CN104020547A - Dual projection digital dome movie camera - Google Patents
Dual projection digital dome movie camera Download PDFInfo
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- CN104020547A CN104020547A CN201410218868.9A CN201410218868A CN104020547A CN 104020547 A CN104020547 A CN 104020547A CN 201410218868 A CN201410218868 A CN 201410218868A CN 104020547 A CN104020547 A CN 104020547A
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Abstract
The invention discloses a dual projection digital dome movie camera which comprises a first sub-structure body A and a second sub-structure B which are connected with each other. Total focal power of a lens combination inside the first sub-structure body A is a negative value, and total focal power of a lens combination inside the second sub-structure body B is a positive value. The two parts form a long-distance structure, thus increasing field angle, raising relative aperture and widening rear working distance. The largest relative aperture reaches 1/2.0, and the highest reversed telephoto ratio reaches 7.1 times. Focal length scaling can be carried out proportionally by the camera, thus adjusting image height of full field-of-view. The camera can be applied to various digital projectors of three target surfaces with the target surface size being 0.95 inch-1.38 inch. The camera applied in a dome cinema has the following beneficial effects: the overall brightness and sharpness of projected frames are raised, and audience seats can be increased at the best watching position at the center of the dome.
Description
Technical field
The present invention relates to a kind of spherical screen stereoscopic film camera lens, particularly a kind of two-shipper to throwing digital ball-screen cinema camera lens.
Background technology
Existing ball screen cinema, is to be all arranged near the centre of sphere of ball curtain with a film projector, through a fish eye lens, picture is projected on ball curtain to i.e. unit projection.For film spherical screen stereoscopic film, easily there is cut and physical damnification in film, affects project effect, is unfavorable for depositing, transmits and safeguards.And film copy is made expensive, except consuming a large amount of noble silvers, also cause chemical industrial pollution, now withdraw from the market at leisure.And for digital ball-screen cinema, the bond length that fish-eye design image height is imager chip, the utilization factor of chip is lower, the screen resolution that causes actual projected to go out is low, in addition, d-cinema projectors is placed near Qiu Mu center, has occupied the optimum position of watching ball curtain film, also exists the low defect of brightness simultaneously.
Summary of the invention
Situation in view of above-mentioned technology, the invention provides a kind of two-shipper to throwing digital ball-screen cinema camera lens, projection picture is divided into two parts, and the mode of throwing is synchronously projected respectively to the upper and lower region of ball curtain, then two projection images synthesize more high-resolution complete movie pictures by splicing.The design image height of this camera lens is the long edge lengths of digital projector chip, can meet the use of digital projector that target surface based on the DLP of shadow casting technique is of a size of three target face structures of 0.95 inch～1.38 inches.
To achieve these goals, technical solution of the present invention is: two-shipper, to throwing digital ball-screen cinema camera lens, comprises the first separation structure body A and the second separation structure body B; Wherein:
The first separation structure body A, has and in camera lens shell, is provided with four lens of three mirror groups; The described corresponding ball curtain of four lens direction sets gradually first lens, the second lens, the 3rd lens and the 4th lens, wherein the 3rd lens and the 4th lens are two gummed mirror groups, described first lens is negative curved month type, forward, the second lens are negative curved month type to convex surface, and convex surface forward, the 3rd lens are biconvex, curvature absolute value is forward-facing little, and the 4th lens are double concave type, and curvature absolute value is forward-facing large; With
The second separation structure body B, have and in camera lens shell, be provided with successively a light hurdle face and seven lens of four mirror groups, it is the 5th lens that described seven lens are arranged in order, the 6th lens, the 7th lens, the 8th lens, the 9th lens, the tenth lens and the 11 lens, wherein the 5th lens and the 6th lens, the 7th lens and the 8th lens, the 9th lens and the tenth lens are respectively two gummed mirror groups, described the 5th lens are double concave type, curvature absolute value is forward-facing little, the 6th lens are biconvex, curvature absolute value is forward-facing large, the 7th lens are biconvex, curvature absolute value is forward-facing little, the 8th lens are negative curved month type, concave surface forward, the 9th lens are for being negative curved month type, convex surface forward, the tenth lens are biconvex, curvature absolute value is forward-facing little, the 11 lens are positive curved month type, convex surface forward, the second described separation structure B is connected with the first separation structure body A.
In the present invention, the ratio of total focal power absolute value of total focal power absolute value of described the first separation structure body A interior lens combination and the combination of the second separation structure body B interior lens is 1.43:1, wherein total focal power of the first separation structure body A interior lens combination is negative value, total focal power of the second separation structure body B interior lens combination be on the occasion of.
In the present invention, described first lens, the heavy crown of the second lens employing are optical glass material; It is optical glass material that the 3rd lens, the 4th lens adopt dense flint system, dense barium flint successively.
In the present invention, described the 5th lens, the 6th lens, the 7th lens, the 8th lens, the 9th lens, the tenth lens, the 11 lens adopt lanthanum crown system, flint to be successively, gently crown system, dense flint system, lanthanum crown system, barium crown are, weigh crown to be optical glass material.
In the present invention, related two-shipper to throwing the optical performance parameter scope of digital ball-screen cinema camera lens is: focal distance f ＇=12mm～20mm; Relative aperture D/ f ＇=1/2.0～1/2.2; Field angle 2 ω=90 °～100 °; Instead more than being 5.3～7.1; Wherein D is entrance pupil diameter.
Of the present invention anti-more than the ratio that refers to lens optical rear cut-off distance L ＇ and focal distance f ＇.
In the present invention, related two-shipper carries out focal length convergent-divergent in proportion to throwing digital ball-screen cinema camera lens, and a little suitably adjusts matching relationship of each main aberration, can meet the application of various digital projector that target surface is of a size of the three target surface DLP of 0.95 inch～1.38 inches.
In the present invention, in described camera lens, all lens workplaces are all designed to standard sphere, and any in its optical texture or a plurality of standard sphere can also be made as aspheric surface, and its optical imagery spectral range is 420nm～685nm.Like this, by complicated design, sacrifice the aberration correction that processing technology is conducive to optical system.
The beneficial effect that the present invention has is: adopted the two-shipper of the rear group of retrofocus type structure forming of front group of negative power and positive light coke to throwing digital ball-screen cinema camera lens, there is front group of field angle and the back focus intercept that is conducive to increase camera lens by negative power, but the front group of aberration coefficients negative value producing for negative power, curvature of the image overcorrect, can be compensated by the just gummed mirror group in front group, in addition Proper Match and the balance of rear group of positive light coke, the various aberrations that cause due to the inner TIR of digital projector have been compensated, can meet the use of digital projector that target surface based on the DLP of shadow casting technique is of a size of three target face structures of 0.95 inch～1.38 inches completely.While adopting two-shipper to show throwing digital ball-screen cinema camera lens, two digital projector are separately positioned near the upper and lower edge of ball curtain, so that the mode of throwing is synchronously shown to picture, increased the overall brightness of picture, improved the resolution of picture, meanwhile, abdicate the position that ball curtain center range this best is watched film, can increase spectators' seat.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the applied digital ball screen cinema of the present invention system architecture schematic diagram;
Fig. 3 is the schematic diagram of digital projector 22 projection images in Fig. 2;
Fig. 4 is the schematic diagram of digital projector 23 projection images in Fig. 2.
Embodiment
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail, only for explaining embodiments of the invention and the beneficial effect having, not for limiting the scope of the invention.
Two-shipper as shown in Figure 1, to throwing digital ball-screen cinema camera lens, is to be connected and to combine with the second separation structure body B by the first separation structure body A.In the first separation structure body A described in the present embodiment, be provided with four lens of three mirror groups.Four described lens comprise first lens 1, the second lens 2, the 3rd lens 3-1 and the 4th lens 3-2 being arranged in order, and wherein the 3rd lens 3-1 and the 4th lens 3-2 are two gummed mirror groups.First lens 1 of the present invention, the second lens 2 are negative curved month type, convex surface (is established camera lens when projection duty forward, object space is that ball curtain end is front, and image space is that digit chip end is rear), play and increase field angle, widen back focus intercept, reduce the effect of eyeglass bore; The 3rd lens 3-1 is biconvex, and curvature absolute value is forward-facing little, and the 4th lens 3-2 is double concave type, and curvature absolute value is forward-facing large.In the second described separation structure body B, be provided with successively a light hurdle face 4, the 5th lens 5-1, the 6th lens 5-2, the 7th lens 6-1, the 8th lens 6-2, the 9th lens 7-1, the tenth lens 7-2, the 11 lens 8, wherein the 5th lens 5-1 and the 6th lens 5-2, the 7th lens 6-1 and the 8th lens 6-2, the 9th lens 7-1 and the tenth lens 7-2 are respectively two gummed mirror groups, the 5th lens 5-1 is double concave type, curvature absolute value is forward-facing little, the 6th lens 5-2 is biconvex, curvature absolute value is forward-facing large, the 7th lens 6-1 is biconvex, curvature absolute value is forward-facing little, the 8th lens 6-2 is negative curved month type, concave surface forward, the 9th lens 7-1 is for being negative curved month type, convex surface forward, the tenth lens 7-2 is biconvex, curvature absolute value is forward-facing little, the 11 lens 8 are positive curved month type, convex surface forward.It is optical glass material that the 11 lens 8 in the present embodiment adopt heavy crowns system or crown, play a part to widen back work distance from.In above-mentioned, total focal power of described the first separation structure body A interior lens combination is negative value, total focal power of the second separation structure body B interior lens combination be on the occasion of, and both absolute values are than being 1.43:1.The second described separation structure body B is fixedly connected with the first separation structure body A by screw thread and jackscrew (not marking in figure).
In the present embodiment, the optical performance parameter scope of described camera lens is: focal distance f ＇=12mm～20mm; Relative aperture D/ f ＇=1/2.0～1/2.2; Field angle 2 ω=90 °～100 °; Instead more than being 5.3～7.1; Wherein D is entrance pupil diameter.
In the present embodiment, after related camera lens proportional zoom, can meet the application of various digital projector that target surface is of a size of the three target surface DLP of 0.95 inch～1.38 inches.
As shown in Figures 2 to 4, utilize camera lens of the present invention to carry out two-shipper while reflecting spherical screen stereoscopic film to throwing in, two digital projector 22 and 23 are arranged on respectively coboundary and the lower limb vicinity of ball curtain 21.The digital projector 22 of top loading projects picture 31 by camera lens of the present invention the middle and lower part of ball curtain 21 with certain angle of depression, the digital projector 23 being contained in below projects picture 32 by camera lens of the present invention the middle and upper part of ball curtain 21 with certain elevation angle, two pictures that projected have certain overlapping region at the Chi Daochu of ball curtain 21, for picture, merge, the dash area in projection image 31,32 is corresponding integration region.When digital projector 22 and 23 synchronous projection picture, spectators just can enjoy more high brightness on floor-type auditorium 24, high definition more, the spherical screen stereoscopic film of stronger impact.
Camera lens of the present invention is a kind of special digital ball-screen cinema projection lens, and the distortion curve form of its requirement is different from traditional curve form, need to recalculate, simulate the distortion curve that can meet the demands.Can antidromicity principle according to light path, lens optical structure is by reverse optical path design.By geometrical optics basic theory, set up suitable optical model, in software, set the basic optical parameter of whole system: field angle, relative aperture, operation wavelength, the equivalent parallel glass that inserts certain thickness (thickness is difference according to the difference of projector target surface size) after rear group dull and stereotyped simultaneously, for the inside colour splitting prism of analog digital projector, the image quality when camera lens of designing so just more can guarantee to use.On this basis, adopt Optimization Design artificial and that design software combines, this system is transformed, optimized, in optimizing process, want the distortion curve tendency of strict control system.Through constantly optimizing, until this camera lens has good aberration quality, uniform illuminance of image plane and good manufacturability.In optimizing process, note upgrading at any time and adjusting various optimization target values.
For embodiments of the invention are described, when camera lens equivalent focal length is 1, its Optic structure parameter is as follows:
| Surface：Type | Radius | Thickness | Material |
| S | 12.342 | 0.32 | H-ZK11 |
| S | 3.769 | 1.64 | ? |
| S | 167.569 | 0.27 | H-ZK11 |
| S | 4.453 | 2.68 | ? |
| S | 11.865 | 0.92 | H-ZF7LA |
| S | -6.257 | 0.43 | H-ZBAF3 |
| S | 7.615 | 11.04 | ? |
| STO | Infinity | 1.76 | ? |
| S | -21.659 | 0.21 | H-LAK3 |
| S | 4.624 | 0.80 | H-F4 |
| S | -8.741 | 0.29 | ? |
| S | 41.338 | 1.37 | H-QK3L |
| S | -3.338 | 0.21 | H-ZF7LA |
| S | -15.049 | 0.29 | ? |
| S | 15.582 | 0.21 | H-LAK3 |
| S | 6.511 | 1.37 | H-BAK7 |
| S | -5.400 | 0.12 | ? |
| S | 7.014 | 0.65 | H-ZK11 |
| S | 92.828 | 1.24 | ? |
Above-mentioned given embodiment, only for explaining embodiments of the invention and the beneficial effect having, not for limiting the scope of the invention.
Claims (7)
1. two-shipper, to throwing a digital ball-screen cinema camera lens, is characterized in that, comprises the first separation structure body A and the second separation structure body B; Wherein:
The first separation structure body A, has and in camera lens shell, is provided with four lens of three mirror groups; The described corresponding ball curtain of four lens direction sets gradually first lens (1), the second lens (2), the 3rd lens (3-1) and the 4th lens (3-2), wherein the 3rd lens (3-1) and the 4th lens (3-2) are two gummed mirror groups, described first lens (1) is negative curved month type, convex surface forward, the second lens (2) are negative curved month type, convex surface forward, the 3rd lens (3-1) are biconvex, curvature absolute value is forward-facing little, the 4th lens (3-2) are double concave type, and curvature absolute value is forward-facing large; With
The second separation structure body B, has and in camera lens shell, is provided with successively a light hurdle face (4) and seven lens of four mirror groups, it is the 5th lens (5-1) that described seven lens are arranged in order, the 6th lens (5-2), the 7th lens (6-1), the 8th lens (6-2), the 9th lens (7-1), the tenth lens (7-2) and the 11 lens (8), wherein the 5th lens (5-1) and the 6th lens (5-2), the 7th lens (6-1) and the 8th lens (6-2), the 9th lens (7-1) and the tenth lens (7-2) are respectively two gummed mirror groups, described the 5th lens (5-1) are double concave type, curvature absolute value is forward-facing little, the 6th lens (5-2) are biconvex, curvature absolute value is forward-facing large, the 7th lens (6-1) are biconvex, curvature absolute value is forward-facing little, the 8th lens (6-2) are negative curved month type, concave surface forward, the 9th lens (7-1) are for being negative curved month type, convex surface forward, the tenth lens (7-2) are biconvex, curvature absolute value is forward-facing little, the 11 lens (8) are positive curved month type, convex surface forward, the second described separation structure B is connected with the first separation structure body A.
2. two-shipper according to claim 1 is to throwing digital ball-screen cinema camera lens, it is characterized in that, the ratio of total focal power absolute value of total focal power absolute value of described the first separation structure body A interior lens combination and the combination of the second separation structure body B interior lens is 1.43:1, wherein total focal power of the first separation structure body A interior lens combination is negative value, total focal power of the second separation structure body B interior lens combination be on the occasion of.
3. two-shipper according to claim 1, to throwing digital ball-screen cinema camera lens, is characterized in that, it is optical glass material that described first lens (1), the second lens (2) adopt heavy crown; It is optical glass material that described the 3rd lens (3-1), the 4th lens (3-2) adopt dense flint system, dense barium flint successively.
4. two-shipper according to claim 1 is to throwing digital ball-screen cinema camera lens, it is characterized in that, described the 5th lens (5-1), the 6th lens (5-2), the 7th lens (6-1), the 8th lens (6-2), the 9th lens (7-1), the tenth lens (7-2), the 11 lens (8) adopt lanthanum crown system, flint to be successively, gently crown system, dense flint system, lanthanum crown system, barium crown are, weigh crown to be optical glass material.
5. two-shipper according to claim 1, to throwing digital ball-screen cinema camera lens, is characterized in that, the optical performance parameter scope of described camera lens is: focal distance f ＇=12mm～20mm; Relative aperture D/ f ＇=1/2.0～1/2.2; Field angle 2 ω=90 °～100 °; Instead more than being 5.3～7.1; Wherein D is entrance pupil diameter.
6. two-shipper according to claim 1 is to throwing digital ball-screen cinema camera lens, it is characterized in that, described camera lens carries out focal length convergent-divergent in proportion, and a little suitably adjusts matching relationship of each main aberration, can meet the application of various digital projector that target surface is of a size of the three target surface DLP of 0.95 inch～1.38 inches completely.
7. two-shipper according to claim 1 is to throwing digital ball-screen cinema camera lens, it is characterized in that, in described camera lens, all lens workplaces are all designed to standard sphere, any in its optical texture or a plurality of standard sphere can also be made as aspheric surface, and its optical imagery spectral range is 420nm～685nm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410218868.9A CN104020547B (en) | 2014-05-23 | 2014-05-23 | Two-shipper is to throwing digital ball-screen cinema camera lens |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410218868.9A CN104020547B (en) | 2014-05-23 | 2014-05-23 | Two-shipper is to throwing digital ball-screen cinema camera lens |
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| CN104020547A true CN104020547A (en) | 2014-09-03 |
| CN104020547B CN104020547B (en) | 2016-03-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594572A (en) * | 2018-07-06 | 2018-09-28 | 刘武 | A kind of immersion hemispheric projection system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040156119A1 (en) * | 2003-02-04 | 2004-08-12 | Nikon Corporation | Image size changeable fisheye lens system |
| CN2840087Y (en) * | 2005-12-03 | 2006-11-22 | 秦皇岛视听机械研究所 | A kind of fish eye lens of showing spherical screen stereoscopic film |
| CN202693982U (en) * | 2012-06-20 | 2013-01-23 | 深圳艾特凡斯智能科技有限公司 | Spherical screen theater system adopting double projectors to carry out projection |
| CN102944925A (en) * | 2012-11-30 | 2013-02-27 | 无锡羿飞科技有限公司 | Short-focus projection lens structure with transmittance of 0.52 |
-
2014
- 2014-05-23 CN CN201410218868.9A patent/CN104020547B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040156119A1 (en) * | 2003-02-04 | 2004-08-12 | Nikon Corporation | Image size changeable fisheye lens system |
| CN2840087Y (en) * | 2005-12-03 | 2006-11-22 | 秦皇岛视听机械研究所 | A kind of fish eye lens of showing spherical screen stereoscopic film |
| CN202693982U (en) * | 2012-06-20 | 2013-01-23 | 深圳艾特凡斯智能科技有限公司 | Spherical screen theater system adopting double projectors to carry out projection |
| CN102944925A (en) * | 2012-11-30 | 2013-02-27 | 无锡羿飞科技有限公司 | Short-focus projection lens structure with transmittance of 0.52 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594572A (en) * | 2018-07-06 | 2018-09-28 | 刘武 | A kind of immersion hemispheric projection system |
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Address after: No. 165, middle section of Hebei Avenue, seaport area, Qinhuangdao, Hebei Province Patentee after: Qinhuangdao audio-visual Machinery Research Institute Co., Ltd. Address before: No. 165, middle section of Hebei Avenue, seaport area, Qinhuangdao, Hebei Province Patentee before: Qinhuangdao Video-Audio Machinery Inst. |